http://crehgvxpuffkun4nvxneikw3m436hhqkvbkt7peoxa6o2p4lfoffz6ad.onion/help/forum/about/origin?lang=en-us
If, later, the "prediction" came true, the predictor would presumably send yet another encrypted "envelope" to the organization, containing the decryption key for the previous "prediction" envelope, plus a public key (despite its name, to be used only once!) to be used for encryption of digital cash used as payment for the award.